Receptor Binding Domains of TcdB from Clostridioides difficile for Chondroitin Sulfate Proteoglycan-4 and Frizzled Proteins Are Functionally Independent and Additive.
Receptor Binding Domains of TcdB from Clostridioides difficile for Chondroitin Sulfate Proteoglycan-4 and Frizzled Proteins Are Functionally Independent and Additive.
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艰难梭菌 TcdB 与硫酸软骨素蛋白聚糖 4 和卷曲蛋白的受体结合域在功能上是独立且相加的。
DOI:
10.3390/toxins12120736
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发表时间:
2020-11-24
期刊:
影响因子:
4.2
通讯作者:
Gerhard R
中科院分区:
文献类型:
--
作者:
Henkel D;Tatge H;Schöttelndreier D;Tao L;Dong M;Gerhard R
Toxin B (TcdB) produced by Clostridioides difficile is a main pathogenicity factor that affects a variety of different cell types within the colonic mucosa. TcdB is known to utilize frizzled-1,2,7 and chondroitin sulfate proteoglycan-4 (CSPG4) as protein receptors. By using human cervical cancer cell line HeLa CSPG4 knockout (CSPG4−/−) cells as well as TcdB mutants which do not bind to either CSPG4 or frizzled-1,2,7, or both, we evaluated the impact of the individual receptors for cytopathic and cytotoxic effects of TcdB. We compared TcdB from the reference strain VPI10463 (TcdBVPI) and the endemic strain R20291 (TcdBR20) which does not interact with frizzled-1,2,7. TcdBVPI devoid of CSPG4 binding (TcdBVPI ΔCROP) shows identical cytopathic potency as full-length TcdB in HeLa CSPG4−/− cells, indicating that interaction with frizzled proteins is not affected in the presence of the C-terminal CROP domain. We validated CSPG4 as cellular receptor for both TcdB toxinotypes in HeLa and HEp-2 cells. By exchange of a single phenylalanine residue, 1597 with serine, we generated a mutated TcdBVPI variant (TcdBVPI F1597S) that in accordance with TcdBR20 lacks binding to frizzled-1,2,7 and showed identical potency as TcdBR20 on HeLa cells. This enabled us to estimate the respective share of CSPG4 and frizzled-1,2,7 in the cytotoxic and cytopathic effect induced by TcdB. Our data reveal that binding to frizzled-1,2,7 and to CSPG4 occurs independently and in an additive manner.
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DOI:
10.1111/febs.14681
发表时间:
2019-03
期刊:
The FEBS journal
影响因子:
--
作者:
Chen P;Tao L;Liu Z;Dong M;Jin R
通讯作者:
Jin R
DOI:
10.1073/pnas.0506391102
发表时间:
2005-12-20
影响因子:
11.1
作者:
Ho, JGS;Greco, A;Ng, KKS
通讯作者:
Ng, KKS
DOI:
10.1073/pnas.93.18.9710
发表时间:
1996-09-03
影响因子:
11.1
作者:
Pluschke, G;Vanek, M;Reisfeld, RA
通讯作者:
Reisfeld, RA
影响因子:
7.8
作者:
Stallcup, W B;Dahlin, K;Healy, P
通讯作者:
Healy, P
影响因子:
4.2
作者:
Olling A;Hüls C;Goy S;Müller M;Krooss S;Rudolf I;Tatge H;Gerhard R
通讯作者:
Gerhard R