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Related Concept Videos

Raman Spectroscopy: Overview01:20

Raman Spectroscopy: Overview

300
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and...
300
Raman Spectroscopy Instrumentation: Overview01:26

Raman Spectroscopy Instrumentation: Overview

294
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
294
Mitochondria01:37

Mitochondria

10.0K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
10.0K
Aging01:26

Aging

36
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
36

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Updated: May 30, 2025

Non-contact, Label-free Monitoring of Cells and Extracellular Matrix using Raman Spectroscopy
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Raman Spectroscopy in Cellular and Tissue Aging Research.

Jeong Hee Kim1, Daejong Yang2, Seungman Park3,4

  • 1Department of Mechanical Engineering, Johns Hopkins University, Baltimore, Maryland, USA.

Aging Cell
|January 29, 2025
PubMed
Summary

Raman spectroscopy offers a label-free method to detect aging and senescence in cells and tissues. This technique analyzes molecular changes, advancing the study of aging and related diseases.

Keywords:
Raman spectroscopyagingcellsenescencetissue

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Area of Science:

  • Biomedical Engineering
  • Gerontology
  • Spectroscopy

Background:

  • Current methods for identifying aging markers rely on optical, proteomic, and sequencing tools, often requiring extrinsic labels.
  • A significant gap exists in clinical detection tools for molecular, cellular, and tissue aging, hindering early disease prevention.
  • Advancements in understanding aging are impeded by the lack of precise, in vivo diagnostic methods.

Purpose of the Study:

  • To review recent progress in applying Raman spectroscopy to study cellular and tissue aging.
  • To explore Raman spectroscopy's utility in detecting cellular senescence and associated molecular alterations.
  • To summarize the application of Raman spectroscopy in identifying aging-related molecular changes in tissues and organs.

Main Methods:

  • Literature review of recent advancements in Raman spectroscopy for aging research.
  • Analysis of Raman spectroscopy's capability for label-free, non-invasive molecular detection.
  • Focus on molecular and cellular alterations characteristic of aging and senescence.

Main Results:

  • Raman spectroscopy enables rapid, label-free analysis of molecular compositions in aging cells and tissues.
  • The technique shows promise for in vivo applications in aging research.
  • Identified molecular alterations associated with cellular aging and senescence can be detected.

Conclusions:

  • Raman spectroscopy is a promising tool for the label-free, non-invasive study of aging.
  • Its application can significantly improve the detection of cellular senescence and aging-related molecular changes.
  • Further development of Raman spectroscopy can aid in the timely prevention of aging-related diseases.