Human primary chronic wound derived fibroblasts demonstrate differential pattern in expression of fibroblast specific markers, cell cycle arrest and reduced proliferation

Monika, P and Chandraprabha, MN and Murthy, KNC and Rangarajan, A and Waiker, PV and Sathish, M (2022) Human primary chronic wound derived fibroblasts demonstrate differential pattern in expression of fibroblast specific markers, cell cycle arrest and reduced proliferation. In: Experimental and Molecular Pathology, 127 .

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Abstract

Introduction: Although wound refers to simple cut in the skin, most wounds don't heal because of the various local and systemic factors that lead to its complexity and chronicity. Thus, prior understanding of the status of the wound is necessary and methods that can differentiate between the healing and non-healing wounds at a much earlier stage is crucial for a successful treatment. Methods: The current study aims at differentiating Acute Wound Fibroblasts (AWFs) and Chronic Wound Fibroblasts (CWFs) based on differential expression of fibroblast specific markers such as Vimentin and Alpha Smooth Muscle Actin (α-SMA) and compare its cell cycle and proliferation. Results: Immunostaining and western blotting analysis showed that, AWFs and CWFs differentially expressed vimentin and α-SMA, with AWFs and CWFs showing higher expression of vimentin and α-SMA respectively. AWFs showed higher distributions in G0/G1 (67.43 vs. 62.16), S phase (22.61 vs. 8.51) compared to CWFs. However, AWFs showed decreased distributions compared to CWFs in G2 + M phase (8.14 vs. 10.6). Thus, it was observed that CWFs showed cell cycle arrest in the G1/G0 phase and inhibited DNA synthesis, which was further confirmed by reduced proliferation of CWFs. We suggest that, differential expression of the cell specific markers can be attributed to its pathophysiological status and chronicity of the wound and reduced proliferation rate of CWFs is due to lesser expression of vimentin, which is a key protein for in vitro cell proliferation. Conclusions: Outcome of the study serve as an immunological tool to guide the chronicity of the wound, which helps to understand the wound towards design of personalized care. The findings also represent a promising opportunity to gain insight into how cell cycle arrest can impact on wound healing and clinical outcomes.

Item Type:	Journal Article
Publication:	Experimental and Molecular Pathology
Publisher:	Academic Press Inc.
Additional Information:	The copyright for this article belongs to the Academic Press, Elsevier Inc.
Keywords:	Acute wound fibroblasts; Cell cycle; Chronic wound fibroblasts; Differential expression; Proliferation; Vimentin; α-SMA
Department/Centre:	Division of Biological Sciences > Molecular Reproduction, Development & Genetics
Date Deposited:	14 Jul 2022 09:36
Last Modified:	14 Jul 2022 09:36
URI:	https://eprints.iisc.ac.in/id/eprint/74409

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