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Soft X-Ray Tomography 3D Scans Show How Cells Respond to SARS-CoV-2 Infection and to Possible Treatments

By MedImaging International staff writers
Posted on 28 Feb 2022
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Image: Digital images of cells infected with SARS-CoV-2 created from soft X-ray tomography (Photo courtesy of Berkeley Lab)
Image: Digital images of cells infected with SARS-CoV-2 created from soft X-ray tomography (Photo courtesy of Berkeley Lab)

An extremely fast new 3D imaging method can show how cells respond to SARS-CoV-2 infection and to possible treatments.

Researchers from Berkeley Lab (Berkeley, CA, USA) and Heidelberg University (Heidelberg, Germany) have cranked up the speed of imaging infected cells using soft X-ray tomography (SXT), a microscopic imaging technique that can generate incredibly detailed, three-dimensional scans. Their approach takes mere minutes to gather data that would require weeks of prep and analysis with other methods, giving scientists an easy way to quickly examine how our cells’ internal machinery responds to SARS-CoV-2, or other pathogens, as well as how the cells respond to drugs designed to treat the infection.

SXT was developed at Berkeley Lab in the early 2000s to fill in the gaps left by other cellular imaging techniques and is currently offered to investigators worldwide even as the researchers continue to refine the approach. As part of a study, the researchers performed SXT on human lung cell samples. The team carefully infected the cells with SARS-CoV-2 and then chemically fixed them with aldehyde-based compounds – a process that kills cells and preserves them, immobilized, in their last living state (and also inactivates any remaining viral particles) – at six and 24 hours post-infection.

The entire team was jubilant when the resulting 3D images had the same level of exquisite detail and clarity that SXT is known for, despite the chemical fixation done to the cells. The takeaway is that their approach will allow many labs to safely image infected cells without the inherent risks – and corresponding required safety protocols – of working with live infected cells. Upon conducting the tomography sessions and image analysis, the researchers were pleasantly surprised to see how SXT captured changes to different organelles within the lung cells at very high resolution after very little time spent on sample preparation and without use of stains or labeling. These additional steps are often needed to generate cell maps wherein the different internal components are easily distinguishable.

Now that they’ve demonstrated the potential of using whole-cell SXT to safely image virus-infected cells, the researchers believe that their findings will help the global scientific community study COVID-19 and potentially other diseases. The team is already putting the technique to good use and has begun using whole-cell SXT to examine how human cells respond to several experimental COVID-19-treating drugs. They hope the rapid turnaround for results will help expedite the drug development process, getting additional effective treatments on the market sooner. They also plan to use the technology to understand the progress of infections caused by other viral agents.

“Prior to our imaging technique, if one wanted to know what was going on inside a cell, and to learn what changes had occurred upon an infection, they'd have to go through the process of fixing, slicing, and staining the cells in order to analyze them by electron microscopy. With all the steps involved, it would take weeks to get the answer. We can do it in a day,” said project co-lead Carolyn Larabell, a Berkeley Lab faculty scientist in the Biosciences Area. “So, it really speeds up the process of examining cells, the consequences to infection, and the consequences of treating a patient with a drug that may or may not cure or prevent the disease.”

Related Links:
Berkeley Lab 
Heidelberg University 

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89 (51.021575927734): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294791776 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
90 (26.941299438477): SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294791776 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
91 (31.948089599609): SELECT id,name,title FROM jos_deeppockets WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id != 294743300 AND id != 294743301 AND id != 294743302 AND id != 294743303 AND id != 294743304 AND id != 294743305 AND id != 294743306 AND id != 294743307 AND id != 294743308 AND id != 294743309 AND id != 294743310 AND metakey != 'aacc' ORDER BY `ordering`
92 (51.021575927734): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (33.140182495117): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (25.98762512207): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (78.201293945312): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (26.941299438477): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (25.98762512207): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
105 (25.033950805664): SELECT show_live FROM jos_com_show_setting LIMIT 1
106 (75.101852416992): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
107 (61.03515625): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
108 (70.095062255859): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294791776 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
109 (62.942504882812): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294791776 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
110 (432.01446533203): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
111 (72.956085205078): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
112 (272.98927307129): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294791776 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
113 (246.04797363281): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294791776 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
114 (53.167343139648): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294791771 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
115 (299.93057250977): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294791771 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
116 (589.13230895996): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
117 (480.17501831055): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
118 (76.055526733398): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
119 (44.107437133789): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
120 (90.122222900391): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
121 (36.954879760742): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
122 (86.784362792969): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
123 (40.054321289062): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
124 (300.88424682617): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
125 (!!!!! 57082.891464233): SELECT * FROM jos_deeppockets WHERE jos_deeppockets.cat = 10 AND jos_deeppockets.type = 'deeppockets_item' AND jos_deeppockets.published = 1 AND jos_deeppockets.created + INTERVAL 14 DAY >= NOW() ORDER BY jos_deeppockets.hits DESC LIMIT 7
126 (290.87066650391): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
127 (205.03997802734): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
128 (!!!!! 1825.0942230225): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294791776 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294791776 AND type='deeppockets_item' AND published='1' LIMIT 1
129 (!!!!! 684334.99336243): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
130 (77.009201049805): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
131 (38.862228393555): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800513 LIMIT 1
132 (30.040740966797): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800513 LIMIT 1
133 (59.843063354492): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800359 LIMIT 1
134 (32.186508178711): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800359 LIMIT 1
135 (30.040740966797): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800361 LIMIT 1
136 (26.941299438477): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294800361 LIMIT 1
137 (640.869140625): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
138 (427.9613494873): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
139 (321.86508178711): SELECT name FROM jos_deeppockets WHERE id=211
140 (46.014785766602): SELECT name FROM jos_deeppockets WHERE id=211
141 (592.94700622559): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))211((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
142 (537.15705871582): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))211((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
143 (87.976455688477): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
144 (59.843063354492): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
145 (!!!!! 10195.970535278): TRUNCATE TABLE jos_trademed_module
146 (131.13021850586): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294791776 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
147 (55.074691772461): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294791776 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
148 (650.88272094727): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
149 (66.041946411133): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
150 (90.122222900391): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
151 (64.13459777832): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
152 (!!!!! 1404.0470123291): SELECT jos_item.* FROM jos_item INNER JOIN jos_number ON jos_item.numberID=jos_number.id WHERE 1=1 AND (jos_item.imgMini<>'') AND jos_item.type='L' AND jos_item.numberID= ( SELECT jos_number.id FROM jos_number WHERE jos_number.journalID IN (10) and jos_number.id in (select distinct jos_number.id from jos_number join jos_item on jos_item.numberid=jos_number.id where jos_item.type='P') ORDER BY (CONVERT(SUBSTRING(issue,1,2),SIGNED) + (CONVERT(SUBSTRING(issue,3,2),SIGNED)*100)) DESC LIMIT 0,1 ) ORDER BY RAND() DESC LIMIT 6
153 (88.214874267578): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
154 (65.803527832031): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
155 (102.99682617188): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294791776 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294791776 AND type='deeppockets_item' AND published='1' LIMIT 1
156 (51.975250244141): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=0 or channel_id is null)
157 (44.107437133789): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=0 or channel_id is null)
158 (54.836273193359): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
159 (169.99244689941): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
160 (69.856643676758): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294791776 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294791776 AND published='1' LIMIT 1
161 (92.029571533203): select jos_twitters.link from jos_twitters where cat=10
162 (47.922134399414): select jos_facebook.link from jos_facebook where cat=10
163 (41.007995605469): select jos_google_plus.link from jos_google_plus where cat=10
164 (37.908554077148): select jos_linkedin.link from jos_linkedin where cat=10
165 (305.17578125): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)
166 (!!!!! 1434.0877532959): insert into jos_banners_delta values (14615,'2025-05-01 02:07:12','52.14.228.67','view'),(14202,'2025-05-01 02:07:12','52.14.228.67','view'),(14203,'2025-05-01 02:07:12','52.14.228.67','view')